hi James,
I do not know of a firmware version that has an S meter function and works with the stock v6 display.? The CEC versions work with either a character display like the original 16x2 display or a Nextion display.? The graphical display of the v6 takes up a lot of the scarce Nano resources to fill it out.? Not sure there is enough left to add any other features than those that come with the original firmware.??
You could try searching the messages on this list server to see if anything comes up.? Most that want an S meter function that I know of swap out the original display for a 2.8" Nextion and use the KD8CEC software.
73
Evan
AC9TU
